A molecularly imprinted polymers/carbon dots-grafted paper sensor for 3-monochloropropane-1,2-diol determination

文献类型： 外文期刊

第一作者： Fang, Min

作者： Fang, Min;Zhou, Lv;Zhang, Hu;Liu, Liang;Gong, Zhi-Yong;Fang, Min;Zhou, Lv;Zhang, Hu;Liu, Liang;Gong, Zhi-Yong

作者机构：

关键词： Paper-based sensor; Molecularly imprinted polymers (MIPs); Carbon dot; 3-Chloro-1,2-propandiol; Fluorescence

期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）

ISSN： 0308-8146

年卷期： 2019 年 274 卷

页码：

收录情况： SCI

摘要： 3-Monochloropropane-1,2-diol (3-MCPD) is a common food processing contaminant and a simple, rapid, sensitive and low cost monitoring technology is needed due to its potential carcinogenic nature. Carbon dots directly intercepted on filter paper provide high fluorescence intensity and can be adapted for use as a sensor. We synthesized a carbon dot-filter paper in combination with a molecularly imprinted polymeric film to extract 3-MCPD from samples. This grafted paper-based sensor exhibited a high adsorption capacity (68.97 mg g(-1)), an excellent selectivity (imprinting factor = 4.5) and a low detection limit (0.6 ng mL(-1)). Recoveries ranged from 97.2% to 105.3% with relative standard deviations < 5.6%. The results obtained using this method were linearly correlated to those of the classic GC-MS method (r = 0.998). Based on the Chinese National Standard, this study provides a novel and powerful platform for the simple, rapid, sensitive and on-site analysis of 3-MCPD in soy sauce.

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